A fuel injection system, in particular for direct injection of fuel into the combustion chamber of an internal combustion engine has a plurality of fuel injectors, whose injection ends, at least, are situated in receptacle bore holes of a cylinder head. The inlet side of the fuel injectors has a connecting piece, which engages with a supply line segment. Pressurized fuel is supplied to the fuel injector via the supply line segment. The connecting piece is sealed off from the supply line segment by a gasket. The gasket has a sleeve-shaped design and has a plastically deformable shaped area, which is plastically deformed during the assembly of the supply line segment with the connecting piece, and has elastic properties while in operation.

The invention relates to a high-pressure fuel reservoir for a common rail fuel injection system of an internal combustion engine, with a tubular base body which has a blind bore extending in the longitudinal direction and a number of connections. In order to improve the high-pressure-tightness and the service life of the high-pressure fuel reservoir, a stopper is disposed in the closed end of the blind bore.

A fuel feed system capable of feeding a fuel to fuel injection valves at a fuel pressure with improved stability is provided. A fuel feed system for an internal combustion engine including a fuel tank and a low-pressure pump for feeding the fuel in the fuel tank to fuel injection valves, is provided with a diaphragm type damper having a wave-shape cross section at a position in contact with the fuel. Also, in a high-pressure fuel feed pump including a pressurizing chamber for pressurizing the fuel, a plunger for pumping the fuel within the pressurizing chamber, an intake valve provided at a fuel inlet of the pressurizing chamber, a discharge valve provided at a fuel outlet of the pressurizing chamber, and a low-pressure chamber provided in an upstream of the intake valve, a mechanism for reducing fuel pressure pulsation is disposed in a space of the low-pressure chamber provided in the upstream of the intake valve, and a fuel pressure sensor for measuring the fuel pressure is mounted near the mechanism for reducing fuel pressure pulsation.

A fuel delivery rail assembly for supplying fuel to a plurality of fuel injectors in an engine is provided. The assembly comprises an elongate conduit having a longitudinal fuel passage therein, a fuel inlet pipe, and a plurality of sockets. Outer walls of the conduit include at least one flat or arcuate flexible first absorbing surface, which is smoothly and integrally connected to an arcuate second absorbing surface. The first absorbing surface or the second absorbing surface faces fuel inlet ports of the sockets. The sectional configuration of the conduit can be flat, a telephone receiver shape, a character "T" shape, a corrugation shape, a dumbbell shape or a reverse eye mask shape. Thus, fuel pressure pulsations and shock waves are reduced by abrupt enlargements of fuel passages and bendings of the absorbing surfaces.

A tubular fuel pressure damper for use in a fuel rail. The tubular fuel pressure damper includes a first and second end and an inner surface defining a cavity. The first and second ends of the fuel pressure damper are closed by crimping to form contact areas. The contact areas may be additionally sealed by welding, soldering or other means.